Annotation of src/usr.bin/tmux/cmd-queue.c, Revision 1.29
1.29 ! nicm 1: /* $OpenBSD: cmd-queue.c,v 1.28 2015/11/12 11:10:50 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <ctype.h>
22: #include <stdlib.h>
1.23 nicm 23: #include <string.h>
1.7 nicm 24: #include <time.h>
1.1 nicm 25:
26: #include "tmux.h"
27:
1.24 nicm 28: enum cmd_retval cmdq_continue_one(struct cmd_q *);
29:
1.1 nicm 30: /* Create new command queue. */
31: struct cmd_q *
32: cmdq_new(struct client *c)
33: {
34: struct cmd_q *cmdq;
35:
36: cmdq = xcalloc(1, sizeof *cmdq);
37: cmdq->references = 1;
1.25 nicm 38: cmdq->flags = 0;
1.1 nicm 39:
40: cmdq->client = c;
1.11 nicm 41: cmdq->client_exit = -1;
1.1 nicm 42:
43: TAILQ_INIT(&cmdq->queue);
44: cmdq->item = NULL;
45: cmdq->cmd = NULL;
46:
47: return (cmdq);
48: }
49:
50: /* Free command queue */
51: int
52: cmdq_free(struct cmd_q *cmdq)
53: {
1.25 nicm 54: if (--cmdq->references != 0) {
55: if (cmdq->flags & CMD_Q_DEAD)
56: return (1);
57: return (0);
58: }
1.1 nicm 59:
60: cmdq_flush(cmdq);
61: free(cmdq);
62: return (1);
63: }
64:
65: /* Show message from command. */
1.18 nicm 66: void
1.1 nicm 67: cmdq_print(struct cmd_q *cmdq, const char *fmt, ...)
68: {
69: struct client *c = cmdq->client;
70: struct window *w;
71: va_list ap;
1.28 nicm 72: char *tmp, *msg;
1.1 nicm 73:
74: va_start(ap, fmt);
75:
76: if (c == NULL)
77: /* nothing */;
78: else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
1.28 nicm 79: if (~c->flags & CLIENT_UTF8) {
80: vasprintf(&tmp, fmt, ap);
81: msg = utf8_sanitize(tmp);
82: free(tmp);
83: evbuffer_add(c->stdout_data, msg, strlen(msg));
84: free(msg);
85: } else
86: evbuffer_add_vprintf(c->stdout_data, fmt, ap);
1.1 nicm 87: evbuffer_add(c->stdout_data, "\n", 1);
1.29 ! nicm 88: server_client_push_stdout(c);
1.1 nicm 89: } else {
90: w = c->session->curw->window;
91: if (w->active->mode != &window_copy_mode) {
92: window_pane_reset_mode(w->active);
93: window_pane_set_mode(w->active, &window_copy_mode);
94: window_copy_init_for_output(w->active);
95: }
96: window_copy_vadd(w->active, fmt, ap);
97: }
98:
99: va_end(ap);
100: }
101:
102: /* Show error from command. */
1.18 nicm 103: void
1.1 nicm 104: cmdq_error(struct cmd_q *cmdq, const char *fmt, ...)
105: {
106: struct client *c = cmdq->client;
107: struct cmd *cmd = cmdq->cmd;
108: va_list ap;
1.20 nicm 109: char *msg;
1.1 nicm 110: size_t msglen;
1.28 nicm 111: char *tmp;
1.1 nicm 112:
113: va_start(ap, fmt);
114: msglen = xvasprintf(&msg, fmt, ap);
115: va_end(ap);
116:
1.20 nicm 117: if (c == NULL)
118: cfg_add_cause("%s:%u: %s", cmd->file, cmd->line, msg);
119: else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
1.28 nicm 120: if (~c->flags & CLIENT_UTF8) {
121: tmp = msg;
122: msg = utf8_sanitize(tmp);
123: free(tmp);
124: msglen = strlen(msg);
125: }
1.1 nicm 126: evbuffer_add(c->stderr_data, msg, msglen);
127: evbuffer_add(c->stderr_data, "\n", 1);
1.29 ! nicm 128: server_client_push_stderr(c);
1.13 nicm 129: c->retval = 1;
1.1 nicm 130: } else {
131: *msg = toupper((u_char) *msg);
132: status_message_set(c, "%s", msg);
133: }
134:
135: free(msg);
136: }
137:
1.4 nicm 138: /* Print a guard line. */
1.21 nicm 139: void
1.10 nicm 140: cmdq_guard(struct cmd_q *cmdq, const char *guard, int flags)
1.4 nicm 141: {
142: struct client *c = cmdq->client;
143:
1.21 nicm 144: if (c == NULL || !(c->flags & CLIENT_CONTROL))
145: return;
1.4 nicm 146:
1.9 nicm 147: evbuffer_add_printf(c->stdout_data, "%%%s %ld %u %d\n", guard,
148: (long) cmdq->time, cmdq->number, flags);
1.29 ! nicm 149: server_client_push_stdout(c);
1.4 nicm 150: }
151:
1.1 nicm 152: /* Add command list to queue and begin processing if needed. */
153: void
1.23 nicm 154: cmdq_run(struct cmd_q *cmdq, struct cmd_list *cmdlist, struct mouse_event *m)
1.1 nicm 155: {
1.23 nicm 156: cmdq_append(cmdq, cmdlist, m);
1.1 nicm 157:
158: if (cmdq->item == NULL) {
159: cmdq->cmd = NULL;
160: cmdq_continue(cmdq);
161: }
162: }
163:
164: /* Add command list to queue. */
165: void
1.23 nicm 166: cmdq_append(struct cmd_q *cmdq, struct cmd_list *cmdlist, struct mouse_event *m)
1.1 nicm 167: {
168: struct cmd_q_item *item;
169:
170: item = xcalloc(1, sizeof *item);
171: item->cmdlist = cmdlist;
172: TAILQ_INSERT_TAIL(&cmdq->queue, item, qentry);
173: cmdlist->references++;
1.23 nicm 174:
175: if (m != NULL)
176: memcpy(&item->mouse, m, sizeof item->mouse);
177: else
178: item->mouse.valid = 0;
1.1 nicm 179: }
180:
1.24 nicm 181: /* Process one command. */
182: enum cmd_retval
183: cmdq_continue_one(struct cmd_q *cmdq)
184: {
185: struct cmd *cmd = cmdq->cmd;
186: enum cmd_retval retval;
187: char tmp[1024];
188: int flags = !!(cmd->flags & CMD_CONTROL);
189:
190: cmd_print(cmd, tmp, sizeof tmp);
191: log_debug("cmdq %p: %s", cmdq, tmp);
192:
193: cmdq->time = time(NULL);
194: cmdq->number++;
195:
196: cmdq_guard(cmdq, "begin", flags);
197:
198: retval = cmd->entry->exec(cmd, cmdq);
199:
200: if (retval == CMD_RETURN_ERROR)
201: cmdq_guard(cmdq, "error", flags);
202: else
203: cmdq_guard(cmdq, "end", flags);
204: return (retval);
205: }
206:
1.1 nicm 207: /* Continue processing command queue. Returns 1 if finishes empty. */
208: int
209: cmdq_continue(struct cmd_q *cmdq)
210: {
1.26 nicm 211: struct client *c = cmdq->client;
1.1 nicm 212: struct cmd_q_item *next;
213: enum cmd_retval retval;
1.24 nicm 214: int empty;
1.1 nicm 215:
1.22 nicm 216: cmdq->references++;
1.1 nicm 217: notify_disable();
1.26 nicm 218:
1.27 nicm 219: log_debug("continuing cmdq %p: flags %#x, client %p", cmdq, cmdq->flags,
220: c);
1.1 nicm 221:
222: empty = TAILQ_EMPTY(&cmdq->queue);
223: if (empty)
224: goto empty;
225:
226: if (cmdq->item == NULL) {
227: cmdq->item = TAILQ_FIRST(&cmdq->queue);
228: cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
229: } else
230: cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
231:
232: do {
233: while (cmdq->cmd != NULL) {
1.24 nicm 234: retval = cmdq_continue_one(cmdq);
1.1 nicm 235: if (retval == CMD_RETURN_ERROR)
236: break;
237: if (retval == CMD_RETURN_WAIT)
238: goto out;
239: if (retval == CMD_RETURN_STOP) {
240: cmdq_flush(cmdq);
241: goto empty;
242: }
243: cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
244: }
1.19 nicm 245: next = TAILQ_NEXT(cmdq->item, qentry);
1.1 nicm 246:
247: TAILQ_REMOVE(&cmdq->queue, cmdq->item, qentry);
248: cmd_list_free(cmdq->item->cmdlist);
249: free(cmdq->item);
250:
251: cmdq->item = next;
252: if (cmdq->item != NULL)
253: cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
254: } while (cmdq->item != NULL);
255:
256: empty:
1.11 nicm 257: if (cmdq->client_exit > 0)
1.1 nicm 258: cmdq->client->flags |= CLIENT_EXIT;
259: if (cmdq->emptyfn != NULL)
1.22 nicm 260: cmdq->emptyfn(cmdq);
1.1 nicm 261: empty = 1;
262:
263: out:
264: notify_enable();
1.22 nicm 265: cmdq_free(cmdq);
266:
1.1 nicm 267: return (empty);
268: }
269:
270: /* Flush command queue. */
271: void
272: cmdq_flush(struct cmd_q *cmdq)
273: {
274: struct cmd_q_item *item, *item1;
275:
276: TAILQ_FOREACH_SAFE(item, &cmdq->queue, qentry, item1) {
277: TAILQ_REMOVE(&cmdq->queue, item, qentry);
278: cmd_list_free(item->cmdlist);
279: free(item);
280: }
281: cmdq->item = NULL;
282: }
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